[mapguide-users] Re: Using MG_DATA_PATH_ALIAS

[Steve G]

I am a bit confused by your XML snippet that you copied.  It doesn't look
quite right to me.  Below is a test from a sample data definition that I
just created (the alias name is "RDriveGIS").

<?xml version="1.0" encoding="utf-8"?>
<FeatureSource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xsi:noNamespaceSchemaLocation="FeatureSource-1.0.0.xsd">
  <Provider>OSGeo.Gdal</Provider>
  <Parameter>
    <Name>DefaultRasterFileLocation</Name>
   
<Value>%MG_DATA_PATH_ALIAS[RDriveGIS]%Aerials/1995Aerials/TIF/B05.TIF</Value>
  </Parameter>
</FeatureSource>


Can you copy and post the whole XML document?  Just to make sure we're on
the same page, the easiest way is use Maestro and click on the button at the
top (Maestro 3.x tool name says "Edit as XML"....it looks slightly different
in 2.x versions but gives you the same xml doc).

My experience is that you can reference files (unmanaged resources) on the
same machine (i.e. "C" drive) or externally like on a file server.  If you
reference to a file server via an alias here are some rules I've used to
make it work (using MGOS versions 2.0 to 2.2):

1.	Open MapGuide Server v2.x Service properties (Control
Panel>Administrative Tools> Services>Mapguide Server v2.x)
2.	Under the Log On properties, add an account that has permission to access
the network drive 
3.	Click apply.
4.	Stop and restart the service.
5.	Add external files (alias) in MapGuide Site Administrator.
a.	To set-up a connection to a network drive, make sure you use the proper
nomenclature 
CORRECT: “\\fileserver\city\utilities\GIS_Data” 
INCORRECT: “R:\city\utilities\GIS_Data”
6.	Stop and restart the service (any changes to the external file aliases
will not change unless you stop and restart the service).

Then go back to Maestro and recreate your data connection / feature source
definition (depending on what version of Maestro you are using, the names
are slightly different but the function is the same).

I haven't had any problems with TIFs and ECWs (aside from some minor
coordinate system issues) while loading from the file server.

-Steve

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